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- Application of Frequency Division Technology for Low Frequency Vibration Analysis of Rotary Machine 分频段技术在旋转机械低频振动分析中的应用
- frequency division technology 分频技术
- DRM has become to a international standard of AM broadcast. It modulate by COFDM(Coded Orthogonal Frequency Division Multiplex) technology. DRM数字调幅广播已经成为国际标准，它使用COFDM(Coded Orthogonal Frequency Division Multiplex)调制技术。
- Why DSL can be called a wide band technology is because it exploits OFDM which represents Orthogonal Frequency Division Multiplexing. DSL技术之所以能够被称为宽带技术,主要是由于它的复用方式是OFDM。
- Orthogonal Frequency Division Multiplexing (OFDM) is an efficient transmitting technology which has high bit rate and resistance to Intersymbol Interference (ISI). 摘要正交频分复用(OFDM)是一种高效的传输技术，它有着很高的比特速率，并能抵抗符号间干扰(ISI)。
- The Modulator/Demodulator adopts OFDM （Orthogonal Frequency Division Multiplexing） technology to solve the antinomy between the high-speed data transmission and the limited cable bandwidth. 电缆调制解凋器采用（）FDM等编码调制技术，解决了高数据传输率和有限的电缆带宽的矛盾。
- OFDM(Orthogonal Frequency Division Multiplexing) is a new modulation technology, it is suitable to high-data-rate transmission in the wireless transfer channel with multi-path transmission. 正交频分复用(OFDM)是一种新型调制技术,特别适合在多径传播的无线移动信道中高速传输数据。
- The subject inducts digital time division technology(PWM),Which is more advantageous at the accuracy and the predigest of hardware than simulant multiplication. 本课题引入了数字时分割(PWM)脉宽调制技术，在测量的准确性、硬件电路的简化等方面都比模拟乘法器具有较高的优越性。
- Use of one channel for several messages by timedivision multiplex or frequency division. 通过时分或频分多路复用的方法,用单个信道传输多个报文。
- From Release 1.2 onwards MU886 will also be able to operate in Frequency Division Duplexing (FDD) mode. 从版本1.;2起，MU886还能按分频双工（FDD）的模式运行。
- The advantages, principles and application methods of its frequency division and M/T measurement of speed are provided. 车用油耗器设计中测量电路的设计是关键技术,重点介绍了分频技术和M/T测速技术的优点、原理和在设计中的应用方法。
- The orthogonal frequency division multiplexing (OFDM) is outlined and the error rate is analysed. 著重分析了正交多载波调制(OFDM)技术的原理及在电力线信道下的误码性能。
- The means of seting up ecological assessment unit based on the little watershed division technology and the district unit could preferably reflect the changing trend of regional ecological quality. 基于小流域分割技术和行政单元进行生态评价单元划分评价单元的方法，较好的反映了区域生态质量变化趋势。
- Orthogonal frequency division multiplexing (OFDM) is a multi-carrier modulation method. 正交频分多路复用是一种多载波调制技术。
- ADSL transmission equipment vendors use either frequency division multiplexing or echo cancellation to achieve this huge gain in throughput. ADSL传输设备供应商不是利用频分多路复用，就是利用回波消除，以获得吞吐量有大幅度的提高。
- The design method of a kind of wideband HF date modem based on orthogonal frequency division multiplexing (OFDM) is introduced. 介绍了一种基于正交频分复用(orthogonal frequency division multiplexing,OFDM)技术的宽带短波数据调制解调器的设计方案。
- Orthogonal Frequency Division Multiple Access (OFDMA) gains an increasing attention for broadband wireless access (BWA) system. OFDMA在BWA系统中得到越来越多的应用。
- The Multi-Carrier CDMA (MC-CDMA) system combines the advantages of orthogonal frequency division multiplexing (OFDM) system with that of CDMA system. Multi-CarrierCDMA(MC -CDMA)系统结合了正交频分复用 (OFDM)系统和码分多址 (CDMA)系统的优点 ,能比传统CDMA系统提供更高的用户容量 ,因而在 3G中受到了广泛的关注。
- The peak-to-average power ratio of orthogonal frequency division multiplexing(OFDM systems is reduced with an improved constellation extension scheme. 为降低正交频分复用(OFDM)信号的峰均功率比,提出了改进的星座图扩展方法。
- A multicell adaptive resource allocation(MARA) scheme was proposed for downlink orthogonal frequency division multiple access(OFDMA) cellular system. 提出了一种用于正交频分多址通信系统下行链路的多小区自适应资源分配算法(MARA)。
